4CH Vehicle Video Control Box for Multi-Camera Display and Camera Switching

Instead of connecting multiple cameras directly to separate control devices, the controller provides 4 camera inputs in one compact unit, allowing different camera views to be selected and displayed through a vehicle monitor. The system supports four CVBS vehicle cameras and can automatically divide or switch the video display according to the selected operating mode. Each camera can be triggered separately, while the system can automatically display the corresponding camera in full screen when a trigger signal is activated.  Each channel supports independent mirror / normal image settings, making the system suitable for different camera installation positions. After a trigger signal is cancelled, the system can delay the image return for approximately 2 seconds before returning to the previous display state. This makes the product suitable for vehicle camera switching, rear view camera systems, multi-camera monitoring and commercial vehicle video systems.

Product Features

1. 4CH Multi-Camera Input

The controller supports four CVBS camera inputs, allowing multiple vehicle cameras to be integrated into one video monitoring system.

It can be connected with:

• Front camera
• Rear view camera
• Left side camera
• Right side camera

This makes it suitable for 4 camera vehicle monitoring systems.

2. Automatic Camera Switching

When a trigger signal is activated, the corresponding camera can automatically switch to full-screen display.

This function is useful for applications such as:

• Reverse camera activation
• Turn signal monitoring
• Side camera activation
• Door or special vehicle monitoring

3. Individual Trigger Control

Each camera can be triggered separately. The user can select any of the four camera channels through the trigger wire or manual operation, providing flexible control for different vehicle configurations.

4. Configurable Camera Priority

The system supports display priority settings for: CAM1 / CAM2 / CAM3 / CAM4. This allows the installer to define which camera should take priority when multiple trigger signals are received. 

5. Multiple Video Connector Options

Video output is available through: RCA / 4P Aviation Connector. This provides flexibility for integration with different vehicle monitor and camera wiring systems.

Product Parameters

Product Type: D1 4CH Vehicle Video Control Box

Camera Input: 4CH CVBS

Camera Selection: Individual Trigger / Manual Selection

Display: Full-Screen Automatic Switching

Display Priority: CAM1 / CAM2 / CAM3 / CAM4

Image Setting: Normal / Mirror

Trigger Function: Individual Camera Trigger

Trigger Return Delay: Approx. 2 Seconds

Video Format: PAL / NTSC

Audio: Audio Output Supported

Power Output: 12V for Cameras and LCD

Working Voltage: 9V–32V

Protection: High Voltage / Low Voltage / Overload Protection

Video Output Connector: RCA / 4P Aviation

Dimension: 155 × 87 × 32mm

Application Scenarios

1. Truck Camera System

The controller can connect multiple cameras to a truck camera system, including front, rear and side cameras.

2. Commercial Vehicle Monitoring

Suitable for commercial vehicle video monitoring systems where several cameras need to be connected to one vehicle display.

Applications can include:

• Delivery trucks
• Logistics vehicles
• Service vehicles
• Utility vehicles
• Commercial vans
• Bus Camera System

The 4CH video controller can be integrated into bus camera systems for front, rear and side monitoring.

3. Construction Vehicle

Suitable for construction and special vehicles requiring multiple camera views around the vehicle.

Examples include:

• Dump trucks
• Concrete mixer trucks
• Excavators
• Wheel loaders
• Special-purpose vehicles
• Rear View Camera System

The controller can be used as a backup camera controller to automatically display the rear camera when a reverse trigger is activated.

4. Multi-Camera Monitoring System

For vehicles requiring multiple viewing angles, the multi-camera video controller provides centralized camera switching and display management.

Typical Vehicle Camera Configuration

Typical 4 Camera Vehicle System:

• CAM1 → Front View Camera
• CAM2 → Rear View / Backup Camera
• CAM3 → Left Side View Camera
• CAM4 → Right Side View Camera

Control:

Trigger Wire / Manual Selection

Display: Automatic Full-Screen Switching

Image: Normal / Mirror Selectable

Video: CVBS

Power: 9–32V

FAQ

Q1: How many cameras can this video control box support?

The controller supports 4 CVBS camera inputs.

Q2: Can each camera be triggered separately?

Yes. Each camera can be triggered individually through the trigger wire.

Q3: Can the camera automatically display in full screen?

Yes. When the corresponding trigger signal is activated, the selected camera can automatically switch to full-screen display.

Q4: Can I manually select the camera?

Yes. Any of the four camera channels can be selected through the control function.

Q5: Can each camera use a different mirror setting?

Yes. Each channel supports independent normal or mirror image settings.

Q6: What vehicles can use this controller?

It can be used for trucks, buses, commercial vehicles, construction vehicles, special vehicles and fleet camera systems.

Q7: Does it support 24V vehicles?

Yes. The working voltage is 9–32V, making it suitable for both 12V and 24V vehicle applications.

Q8: Does the controller support PAL and NTSC?

Yes. Both PAL and NTSC video formats are supported.

Q9: Does it support audio?

Yes. The controller supports audio output.

Q10: What happens after the trigger is cancelled?

After the trigger is cancelled, the image can remain for approximately 2 seconds before returning to the previous display state.